What are the precautions for 9v battery charging

2. Check whether the electrical appliances and battery contacts are clean, wipe them with a damp cloth if necessary, and install them in the correct polarity after drying; 3. Children should not be allowed to replace the batteries without adult supervision, and the 9v battery should be charged out of the reach of children 4. Do not mix new and old batteries or different types of batteries, especially dry batteries and rechargeable batteries; 5. Do not try to regenerate the primary battery by heating, charging or other methods to prevent danger; 6. Do not short-circuit the rechargeable battery, otherwise the battery will be damaged, and heat will burn the battery. 7. Do not heat the battery or throw the battery into the water. Putting the battery into the water will cause the battery to fail, or a fierce chemical reaction will burst and hurt people, or some harmful gas and smoke will appear. 8. Do not disassemble the battery, or use a sharp object to penetrate the battery, because the internal electrolyte of the battery will damage the skin and clothing. 9. Turn off the power switch after using the electrical appliance to prevent fire due to heat; 10. Remove the battery from electrical appliances that have not been used for a long time, and store the battery after emptying it. And take out the charge and discharge every 3 months or so; 11. The battery should be stored in a cool, dry place, away from direct sunlight; 12. The nickel charger and the lithium charger can not be mixed; 13. Do not use the battery by welding, as it appears during welding High temperature will damage the internal structure of the battery, make the battery unusable, or even dangerous; 14. It cannot be reversely charged. Reverse charging is equivalent to over-discharge. Over-discharge will cause adverse reactions inside the battery, resulting in serious damage to the battery and a large amount of production. Gas will cause chemical leakage of rechargeable batteries. 15. Do not put the rechargeable battery under rain. Rain water will conduct electricity, and a short circuit is likely to occur, causing the battery to become hot due to instantaneous high current discharge, which may damage the battery or cause danger. 16. The battery cannot be stored in a high-temperature or high-humidity environment. The battery's own reaction will be intensified, so it is impossible to supply enough capacity to the electrical appliances. In addition, under high temperature and high humidity, the aging rate of the battery will be greatly accelerated, and it will also corrode electronic components. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.